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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Nelson, Robert. - Schubert, Thomas H., - Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) - United States. Forest Service.
    Publication info: Berkeley, Calif, Dept. of Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station, 1976
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library